Optical washer and screw



May 12,1925. 1,537,489

C. NOBS. JR

OPTICAL WASHER `AND SCREW Filed Oct. 16, 1922 Patented May 12, 1925.

UNIT-Enf smreseariznr ferrea.;

CHARLES NOBS, SR2', OFNEWARK, IN'EFW` JERSEY, .'.flrSiSICrNORTO'CHALRLESNS Yr/iSDN,

0F NEWARK, NEVVJERSEY, A CGRPGRATION OF OPTICAL WASHER-"AND SCREW;

Application filed vOctober 16,'1922fv Serial No.V 59451720.

To all Iwim/n t may Concern/.f

e it known that CHARLES Nons, lr., a citizen olv theUnitedStates,'residir g in the city ot' Newark, county ot Essex, and State ot'New Jersey, .have invented a new and useful Improvement in Opticallashers and Screws, oliwhich the following is a specification;

My invention 4relates todevicesl for secur-` ing the parts o'topticaltrames together, such as the temples to spectacle trames or the hridgeto the lenses, and its purpose is to.

overcome the ditiiculties -andiolijections to the presenttorm ofscrews',rivets vand pins, almost uiiiversally used-1 .for .the purpose.ln the assemblyof the'parts of the spectacles, and` the. polishing otthe framesupon the usual hutting wheel, particles of thepolishingmaterials, such as powdered pumice, will accumulate vin thescrew holes-and inthe threads ot' the screws, sothat the threads aredestroyed'and thescrews rendered useless when an 'attempt'v is V`made toseparate the parts, as 'for repairs.; rlhis makes it neces` sary tore-drill and retap the holes and sup` ply a special screw of larger sizeto ltake the place ot the one discarded. Sometimes repairer will upsetthe endot-the screwihy pinching it between Y pliers to distort the.

screw into anoval so as to" enlarge its dianieter in -oncl'direction `inorder that `its threads may take holdin the screw'hole. 7this is out atemporary makeshitand soon the parts become looseand areonly weakcnedupon being re-tightened, The ditticulty may almost invariably lie-tracedto theggrits inthe polishing material accumulating in the pivots andscrew holes,where they continue to grind whenever theparts arerelatively shifted or moved, and in consequence the threads upon thescrew or in the screw hole become useless. The delicacy of the parts issuch that the slightest weakening of a connection will he followedshortly by complete uselessness.

My improvement consists in providing a screw slightly longer than thewidth of the hinge element through which it is to he inserted, and thenplacing a screw-threaded washer upon the exposed end of the screw, andscrewing the same firmly against the tace of the hinge element, andthereafter tiling ott' the projectingend of the screw to make a neatfinish, The accumulation of yskeleton frame spectacle, in attempting-toovercomey the ditlic-ulty, the

, ing.

the polishing: grit-.in the screw` holes or in l the tlireadsvi-sthereby e'li'ectually' prevented and the difficulty' hithertoencountered is completely overcome.

In carrying out my improvement, make use ot .thcorms and structuresillustrated in the acconipanying drawing. .y y

Figml; isaplan view ot' a well-known type oi `spectacle with a Zylonitetrame. One ot the temples is broken away to 'show theloL cation and oneot' -theuses ot' my improvex ment.. A

Fig. ifis an end .viewvvof the usual '-torm ot hinge forconnectingthetemples to the frame,- .hut with my, improvement therein.

Figx isa planfviewot' the same.V Figtis a planet thehingeiclosed.. Yltig, a-nenlarged sectionot` .the hinge showing the screw andfwasher infplace,

, Figs. 6v to 12 inclusive illustrate in plan, y

and Figs. 13 to.19finclusive'.illustrate in Asecltion several. of thedifferent, -formswhichthe washer may `take-to accomplish thev objectFig,- 21 is aplan Viewv of the `temple :coni y ncction.; p l n l Similarreference y'characters :referto like parts throughout the specificationand' drawof tl1e-uses oit-my invention.' The frame 1 may he kot anyusual or preferred .form and material,.havingfthe lenses 2,2therein,.and

. ViiFiggailfI have .shown a well-known type V vof spectacletrame,.with'oneaotthe temples y broken -A away ,to show f the `location'and A.one

with the end projections 3, 3,v to which the f templesfhit'are hinged.In the present case, the hinge :isa separate member vmade up; oit

the two'elements v5. 6, .which "are perma- Y nently secured totheframeand temples by` .means of. the rivets 7 y7.` ,The two hinge membershave the usual int'ermeshing apertured hinge lugs 8, 8 and 9respectively,

Y through which'the headed pintle screw 10 is inserted. Hitherto, it hasbeen the practice to thread one of the lugs and counterhore the other sothat the screw couldloe inserted therein and screwed into vthe threadedlug. The frequent opening and closing of the temple has a tendency toloosen the lscrew in the lug and wear the threads so that they becomeuseless. Coupled with the fact that more often than otherwise some'ofthe polishing gritwill have accumulated in the Ythr'eads, this frequentrelative movement,y Yand consequent wearing of thepartssoon makes repairnecessary. To overcome this diiculty, I extend the screw Y10 slightlybe` yond the face of the apertured lug 8,'and mount thereon thescrew-threaded washer 11, screwing the same home against the face of thelug. This serves to firmly fiX- the screw in place, and prevents lthemovement of the lug 9 from loosening it. The lug 8 ythreaded washer 11.

may be threaded and the screw 10 turned therein, or the threading of thelug may be omitted as desired'. The broad face of the washer bearingVuponthe face of the lug 8 introduces a suiiicient frictional engagementtoprevent the relative movement of the lug 9Y from turning Vthe screw,no matter how much the lug 9 may be cramped or twisted. The result ofthe introduction of the washer and screw construction has been acompleteobviation of the difiiculty above noted.

Thile the improved washer and screw as vabove described areYparticularly designed for the hinge connection of spectacles yet theyare equally adapted for securing the bridge and temples to the lenses ofskeleton fra-me spectacles, as clearly shown in Figs. 20.and 21. .Herethe bridgelugs 8', 8 extend upon each side of the lens 2', with thescrew 107'v passing through the apertures therein and ysecured in placeby the screw The temple piece 12 may be secured to the lens Vin',exactly the Vsame manner and further description there- 'of is deemedunnecessary.

While the preferred ,form of the-washer 11 is as sho-wnin Fig. 5, i. e.,flatjupon its contact face and `rounded upon its exposed face, yet it isobvious that it may take other forms'and still accomplishthe purpose ofmy invention. The preferred form may be preserved,r and a pair ofminuteV apertures aan may be provided in which to insert the Vpoints ofa pair of dividers, so that the washer may' be 'conveniently turned,-Vas shown in Figs; 6 and 13; or open. slots may be provided as shown inFigs. 12 and 19 for the same purpose. The edge of the washer may beknurled as shown in Figs. 'Tand 14,

or made polygonal as shown in Figs. 8 and `'15, to facilitate theturning of 'the washer 'upon the screw. In order to Vincrease thefrictional engagement between the flat face of the washer and the faceof the lug r8, this fla-t face mayv be radially corrugated, as

shown in Figs. 9 and 16. V

In Figs. 10 and 17 as provided with a small annular projection he washeris shown v Y Vsurrounding the aperture, and when the washer is screwedhome, this projection may be rspun down over the end of the screw to addto the finished appearance.

In Figs. 11 and 18, the end of the screw Y is shown asslightly'counterbored to provide a small annular Vprojection beyond theface of the washer, as at d, which may be spun down over` the face ofthe washer to prevent accidental unscrewingl Many other forms will bereadily'y suglgested to those skilled in the art, which will come withinthe scope of my improvement. rThe device may bejproduced at a veryreasonable cost, and a material saving in cost .of repairsbe effected byits use, as well as a saving in returns of defective work.

I claim 1. ln an optical frame connection, the

combination with the frame,A of an aper-V turedl hinge element securedto said frame, a temple havingga hinge element secured thereto,sa1dhinge elements adapted' to 1nyter-engage with their apertures inregistry,

upon its outer surface adapted to be spunV down over the end of ascrew.'

3. Anoptical washer and screw comprising a headed and threaded screw, athreaded washer adapted to bel screwed Vupon said screw, said washerhaving a rounded outer surface andY means thereon to facilitate theturning of said washer and anannular pro- CHARLES Nous, JR.

jection on said washer adapted tobe spun `down over the end of a screw.1

